Mountain Building

The diagram below shows an example of a geologic feature that is common in New Mexico. The arrows show the direction of tectonic force.

Which of the following is a type of fault that you would expect to find in this type of geologic setting?

• normal

• reverse

• transform

• strike-slip

Tags

NGSS.MS-ESS2-2

New Mexico geology is dominated by tensional tectonic forces. Based on this information, which two types of mountains would you expect to find in New Mexico?

• volcanic and dome

• fault block and dome

• fault block and folded

• volcanic and fault block

Tags

NGSS.MS-ESS2-2

Over long periods of time, tectonic forces can cause rocks to fold. What kind of stress causes folding?

• tension

• shear stress

• compression

• normal stress

Imagine that you are a geologist looking at two different folds. You observe that in the first fold, the rocks get younger the farther they are away from the center of the fold. In the second fold you observe that the rocks get older the farther they are away from the center of the fold. Which of the following correctly describes what you observe?

• The first fold is a syncline and the second fold is an anticline.

• The first fold is an anticline and the second fold is a syncline.

• The first fold is a syncline and the second fold is a monocline.

• The first fold is an anticline and the second fold is a monocline.

Long ago the eastern part of North America collided with the northern part of Africa during the formation of the supercontinent Pangaea. Later, the two continents separated as Pangaea broke apart. Which of the following describes what happened when the two continents collided?

• Folded mountains formed as a result of tensional stress.

• Fault-block mountains formed as a result of tensional stress.

• Folded mountains formed as a result of compressional stress.

• Fault-block mountains formed as a result of compressional stress.

Tags

NGSS.MS-ESS2-2

Long ago the eastern part of North America collided with the northern part of Africa during the formation of the supercontinent Pangaea. Later, the two continents separated as Pangaea broke apart. Which of the following describes what happened when the two continents separated?

• Folded mountains formed as a result of tensional stress.

• Fault-block mountains formed as a result of tensional stress.

• Folded mountains formed as a result of compressional stress.

• Fault-block mountains formed as a result of compressional stress.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

What is the primary way that folded mountains are formed?

• by tension

• by shear stress

• by compression

• by volcanic activity

What happens to rocks during deformation?

• Rocks become minerals.

• Rocks change shape and size.

• Rocks change into metal ores.

• Rocks change in mineral composition.

Which of the following can form as a result of tension caused by tectonic plate movement?

• a syncline

• an anticline

• a folded mountain

• a fault-block mountain

Tags

NGSS.MS-ESS2-2

What happens when stress causes a reverse fault?

• The footwall moves up.

• The hanging wall moves up.

• The hanging wall drops down.

• The walls move from side to side.